Abstract:
Embodiments herein relate to a method in a radio base station (12) for performing thermal noise power floor estimation in a radio communications network (1). The radio base station (12) computes table entries for a table for a transcendental function evaluation, which table is of minimized size with a range of table entries defined by a smallest table entry, a largest table entry, and a number of table entries. The radio base station (12) further estimates a thermal noise power floor by performing a transcendental function evaluation in computing a product representing a cumulative probability function,which cumulative probability function is related to the thermal noise power floor. The transcendental function evaluation is performed by using table look ups of the table with the computed table entries.
Abstract:
In a method of providing real time difference determination for a mobile terminal in a telecommunication system, comprising a plurality of eNodeBs in communication with a core network, each eNodeB having a plurality of associated cells, each cell potentially servicing one or more mobile terminals, determining S10 a first timing advance value representative of a first geographical distance measure between the mobile terminal and a first serving eNodeB prior to a handover to a second serving eNode B, determining S20 a second timing advance value representative of a second geographical distance measure between the mobile terminal and the second eNodeB after the handover. Subsequently, determining S30 a time of arrival measure between the mobile terminal and at least two eNodeBs, and signaling S40 representations of the determined first and second geographical distance measures and the determined time of arrival measures for said mobile terminal to at least said second eNodeB, together with a respective unique identification parameter of the at least two eNodeBs, wherein determination of real time differences is enabled based on at least the signaled representations.
Abstract:
The present invention relates to methods and arrangements for scheduling of positioning channels and traffic in order to recover a sufficiently perfect orthogonality including scheduling tasks for the downlink and uplink direction. A scheduling manager co-ordinates the scheduling and measurement timing of first and second positioning schedulers that, respectively, allocate uplink and downlink radio resources.
Abstract:
Positioning and location services are provided in a wireless communication network (200) using civic address information. The civic address information may comprise a data structure including textual Information Elements such as apartment or office number, street number, street name, city, state, postal code, and the like. A positioning method is defined comprising performing a civic address lookup to obtain (14) a location in civic address format for an identified node (216), based upon information about the identified node's serving (or associated) node (220) and neighbor nodes (222). Signaling is defined to request the civic address positioning method, to exchange capabilities, to communicate (20, 114, 118) location information using a civic address format, report (124) a positioning failure and optionally the failure cause, and the like. Location information may be translated (116) between a civic address format and a 3GPP or 3GPP2 positioning format. The positioning method and associated signaling are particularly advantageous in indoor environments, where conventional positioning methods fare poorly or fail altogether.
Abstract:
A scaling apparatus and method scales uncertainty criteria (horizontal and vertical accuracy requirements) originally received from an end user before the uncertainty criteria is sent on to a wireless terminal (30) as requirements on the accuracy of location positioning performed by/for the wireless terminal. In an example embodiment the amount/degree of scaling is selected according to a configured best estimate of the confidence and uncertainty relation, and such best estimate can be based on the majority of the terminals of the network. For a WCDMA radio access network (RAN) case the scaling can be performed in a radio network controller (RNC). For a Long Term Evolution (LTE) radio access network (RAN) case the scaling can be performed in the evolved Serving Mobile Location Center (eSMLC) node (26). In another case the scaling can alternatively be performed in the wireless terminal itself.
Abstract:
Positioning and location services are provided in a wireless communication network (200) using civic address information. The civic address information may comprise a data structure including textual Information Elements such as apartment or office number, street number, street name, city, state, postal code, and the like. A positioning method is defined comprising performing a civic address lookup to obtain (14) a location in civic address format for an identified node (216), based upon information about the identified node's serving (or associated) node (220) and neighbor nodes (222). Signaling is defined to request the civic address positioning method, to exchange capabilities, to communicate (20, 114, 118) location information using a civic address format, report (124) a positioning failure and optionally the failure cause, and the like. Location information may be translated (116) between a civic address format and a 3GPP or 3GPP2 positioning format. The positioning method and associated signaling are particularly advantageous in indoor environments, where conventional positioning methods fare poorly or fail altogether.
Abstract:
Kalman filtering is applied to obtain a fast converging, low complexity echo (y(t)) canceller (18). An averaged diagonal Riccati equation allows optimal time varying adaptation gains K(t) to be precomputed, or computed online with a small number of scalar Riccati equations.
Abstract:
A method and apparatus for improving the decoding of audio signals is disclosed. In a receiver of a frame based radio communication system, rejected frames are concealed according to a first algorithm if the last accepted frame was a speech frame and according to a second algorithm if the last accepted frame was a frame containing background sounds.
Abstract:
Un método de llevar a cabo un servicio de localización de plano de usuario en un terminal móvil (16)soportado por una red (10) de comunicación inalámbrica, estando el citado método caracterizado por: recibir datos de posicionamiento (22) por medio de señalización de plano de control desde la red (10) decomunicación inalámbrica, estando los citados datos de posicionamiento ( 22) determinados por la red (10) decomunicación inalámbrica para el terminal móvil (16); transferir los datos de posicionamiento (22) desde una función de plano de control (80) del terminal móvil (16) a unafunción de plano de usuario (82) del terminal móvil (16); y transmitir los datos de posicionamiento (22), o la información de ubicación derivada de los datos de posicionamiento(22), desde el terminal móvil (16) a la red (10) de comunicación inalámbrica por medio de señalización de plano deusuario, para soportar el servicio de localización de plano de usuario.